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Proceedings Paper

Ultra-sensitive near-infrared fiber-optic gas sensors enhanced by metal-organic frameworks
Author(s): Xinyuan Chong; Ki-Joong Kim; Erwen Li; Yujing Zhang; Paul R. Ohodnicki; Chih-Hung Chang; Alan X. Wang
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Paper Abstract

We demonstrate ultra-sensitive near-infrared (NIR) fiber-optic gas sensors enhanced by metalorganic framework (MOF) Cu-BTC (BTC=benzene-1,3,5- tricarboxylate), which is coated on a single-mode optical fiber. For the first time, we obtained high-resolution NIR spectroscopy of CO2 adsorbed in MOF without seeing any rotational side band. Real-time measurement showed different response time depending on the concentration of CO2, which is attributed to the complex adsorption and desorption mechanism of CO2 in Cu-BTC. The lowest detection limit of CO2 we achieved is 20 ppm with only 5-cm long Cu-BTC film.

Paper Details

Date Published: 7 March 2016
PDF: 7 pages
Proc. SPIE 9702, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVI, 970207 (7 March 2016); doi: 10.1117/12.2214021
Show Author Affiliations
Xinyuan Chong, Oregon State Univ. (United States)
Ki-Joong Kim, Oregon State Univ. (United States)
Erwen Li, Oregon State Univ. (United States)
Yujing Zhang, Oregon State Univ. (United States)
Paul R. Ohodnicki, National Energy Technology Lab. (United States)
Chih-Hung Chang, Oregon State Univ. (United States)
Alan X. Wang, Oregon State Univ. (United States)


Published in SPIE Proceedings Vol. 9702:
Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVI
Israel Gannot, Editor(s)

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